Yiyiyimu commented on a change in pull request #2036:
URL: https://github.com/apache/apisix/pull/2036#discussion_r479714677



##########
File path: bin/apisix
##########
@@ -870,35 +870,21 @@ local function init_etcd(show_output)
 
     local host_count = #(yaml_conf.etcd.host)
 
-    -- check whether the user has enabled etcd v2 protocol
-    for index, host in ipairs(yaml_conf.etcd.host) do
-        uri = host .. "/v2/keys"
-        local cmd = "curl -i -m ".. timeout * 2 .. " -o /dev/null -s -w 
%{http_code} " .. uri
-        local res = excute_cmd(cmd)
-        if res == "404" then
-            io.stderr:write(string.format("failed: please make sure that you 
have enabled the v2 protocol of etcd on %s.\n", host))
-            return
-        end
-    end
-
     local etcd_ok = false
     for index, host in ipairs(yaml_conf.etcd.host) do
 
         local is_success = true
-        uri = host .. "/v2/keys" .. (etcd_conf.prefix or "")
 
         for _, dir_name in ipairs({"/routes", "/upstreams", "/services",

Review comment:
       I noticed users could still set up multiple addresses for the etcd 
cluster, so maybe we need to keep the loop?
   
https://github.com/apache/apisix/blob/c54aec8f6cec2bd31c7c8717bf5220327584be03/conf/config-default.yaml#L133-L135




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